Questions regarding replacing 2008r2 DCs?
I 'm working with a company now that had the IT person leave unexpectedly. I have looked over the system and there are a number of updates I need to make. One such update is to replace their 2008r2 DCs with 2012r2. They have one piece of software that…
Authorized DHCP server name and IP shows as IP only
we have RSAT configured in our environment. we connect all our authorized DHCP server remotely. while connecting server i can see both the value as IP address but not hostname under name. we have both reverse and forward record updated, …
Add-IpamRange adding wrong range
In the documentation of Add-IPAMRange under https://learn.microsoft.com/en-us/powershell/module/ipamserver/add-ipamrange?view=win10-ps at example 1 the command executed is "Add-IpamRange -NetworkId "10.13.0.0/16" -PassThru" and the…
IPAM redundancy deployment
I am looking to migrate from Blue Cat DDI to Windows Server IPAM. I am having a hard time finding any documentation on deploying IPAM with redundancy and also how to possibly import data from 3rd party DDI solutions. Any suggestions on how I may find…
Change TTL for Forward lookup DNS zone
Mix windows 2008 r2 and windows 2016 Domain controllers. DNS is Active directory integrated. Repliclation all dns servers in the forest. Standard TTL is 1 hour. I change the TTL for a zone to 10 min. Restarted the DNS server srvice and waited a few…
"Random" HTTPS issues, possibly related to DNS server
Hi, this is a rather strange problem and I'm stuck at this point. Several users have issues with HTTPS connections not working or only working after multiple attempts. This may or may not only occur with certain applications and usually is not…
Question about DNS dynamic update
Currently the zone on DNS servers of one of our domains is set to Non Secure and Secure Updates. Now we want to change it to accept only “Secure Updates”. We understand that there should be no impact to the existing records. However we would like to…
Cisco router as DHCP for SCCM OSD
Our network architect suggested to use Cisco router as DHCP for SCCM OSD build factory. We are noticing that IP assignment is becoming an ongoing issue. Has someone else tried this kind of setup? What is your experience? Is it better to use Windows…
Demoting DC/DHCP
Hi, WE have 5 virtualized server 2012 DC's in 4 different subnets and a single physical server 2016 DC. In site A we have 2 VM 2012 DCs and singel 2016 physical DC. One of the VM 2012 DC has all of the FSMO roles plus DHCP. The Physical DC also has…
Impact of Changing IP Address of Domain Controller, Exchange Mailbox Server, DHCP Server and ADCS server.
Due to some restructure in network infrastructure, have to change local IP address of our DC Servers. We planned to change IP local IP Address of Domain Controllers (2 node), Exchange Mailbox Servers (2 node), ADCS Server (1 Node) and DHCP server (2…
IPAM on Windows Server 2016
I have two single domain forests with a two-way trust between them. I have installed IPAM on a server in DomainA in ForestA. However, the Get Forests button is not discovering ForestB containing DomainB at all. Moreover, I am also finding that it is…
What is the permanent fix for this Event 4000 error in DNS?
Hi Everyone, We found this fix for Event 4000 that we from time to time are seeing from the main DC on this client site. They currently have 2 DC (DC01 and DC02). Most of the time we will just reboot the server when this ADUC error started showing…
Unable to sign CSR with Microsoft Windows CA
Hello Guys, I have created CSR (using the blow guide) for one of our NPS servers. https://documentation.meraki.com/zGeneral_Administration/Other_Topics/Creating_an_Offline_Certificate_Request_in_Windows_Server When trying to sign it with our CA I…
Policy Based DNS - Name resolution
HI There, We are planning to implement Policy based DNS which is introduced in Windows 2016 to achieve the following scenario ; We have several web applications that are accessed internally, and externally over internet. These applications are…
How to find all possible DNS records for a server
Hi, I have decommissioned a Windows 2012 domain controller naming USDC-01. I want to find out each and every possible records (any records) for USDC-01 from all the forward, reverse lookup zones or conditional forwarder so that I can delete them.…
A DNS error on our domain controllor
I got DNS error as below : Event 4015, DNS-Server-Service: “The DNS server has encountered a critical error from the Active Directory. Check that the Active Directory is functioning properly. The extended error debug information (Which may be empty) is…
DNS Search Suffix When DHCP Option 015 and GPO is used
We have an issue where the DNS Search Suffix seems to stop working. The machine is in Domain A which is trying to contact a resource in Domain B. Both domains are in different forests and connected via a two way trust. This is a very intermittent…
Scavenging (Cleanup Stale DNS Records)
Dears, We have enabled Scavenging zone aging but not DNS level, we need to enable in DNS level also, but we scare to affect some server which are shut down for many days even the IP address is set as a static and move them to stale, and we scare also…
What is the correct way to configure dhcp on a vm?
Here is my documentation so far. Please help!!! Server 2008 R2 on VMWare Workstation. DNS: 192.168.0.2 (server 2008 R2) Subnet Mask: 255.255.255.0 Default Gateway: 192.168.0.1 Preferred DNS Server: 8.8.8.8 DNS Server Config Fowarders:Google…
IPAM Failover DHCP scope access denied
Hello! I have a trouble with scope on DHCP failover server in IPAM. 1) Server 1 - IPAM role + DHCP 2) Server 2 - DHCP role on Server 1 and server 2 create failover load balance dhcp scope Go to IPAM - Monitor and manage - DHCP SCOPE - edit DHCP scope…